Comparative study of mechanical properties and damage kinetics of two- and three-dimensional woven composites under high-strain rate dynamic compressive loading. (August 2016)

• Record Type: Journal Article
• Authors: Arbaoui, Jamal; Tarfaoui, Mostapha; Bouery, Charbel; El Malki Alaoui, Aboulghit
• Is Part Of: International journal of damage mechanics. Volume 25:Number 6(2016:Aug.)
• Page Start: 878
• Page End: 899
• Publication Date: 2016-08
• Subjects: Composites -- dynamic compression -- mechanical properties -- damage -- delamination; Fracture mechanics -- Periodicals; 620.1126
• DOI: 10.1177/1056789516651691
• Languages: English
• ISSNs: 1056-7895

Abstract

The in-plane compressive behavior of two- and three-dimensional woven composite was investigated at high strain rates. The Split Hopkinson Pressure Bar is employed to test the high strain rate dynamic mechanical properties of E-glass vinylester composite material. For three-dimensional woven composite, two configurations were tested: compression responses along the stitched direction and orthogonal to the stitched direction. Dynamic compression properties for two- and three-dimensional are determined and compared. Experimental results show that the strain rate has a significant effect on the two- and three-dimensional woven composite response. It is observed that the three-dimensional woven composite has higher compression strength and dynamic modulus than the two-dimensional composite at high strain rate. For this study, a high-speed camera was used to determine the damage kinetics under dynamic load. The two-dimensional woven composite is mainly damaged in a mode of matrix cracks and severe delamination, while the mode for three-dimensional woven composite is mainly cracking of matrix and delamination for in-plane along to the stitched direction and shear banding failure for in-plane orthogonal to the stitched direction.